The aSoIaF books GoT, CoK and SoS are quite good, but both the fourth one and fifth one disappointed me. I did not like them that much.
I finished the fifth one a few weeks ago, and now I am reading the Warrior of Rome series by Harry Sidebottom, and enjoying them a lot. They are based on the late Roman Empire in the East, and show some very good scenes imo.
Also, I just finished the new book by Ken Follet, The Winter of the World, and I quite like it, I recommend the Century Trilogy (Fall of Giants and WotW released, third one to come in a couple of years). The first one is around WWI, the second one about WWII and the years around it (rise of fascism, evolution of Communism, Spanish Civil War, etc and consequences after it), and the third one will be around the Cold War.
What I like about these books (and in general Ken Follet) is how he follows families from different places, ways of thinking, social classes, and makes them interact in pretty plausible ways.